Question

Can someone PLEASE help me write a paragraph proof over this?

Given : AC =XZ
AB = YZ
Prove : BC = XY
Statements Reasons
AC = XZ , AB = YZ | Given
AC=XZ AB =YZ | Definition of congruent seg
AC = AB + BC |Segment addition postulate
XZ = XY + YZ |
AB + BC = XY + YZ | Substitution
YZ + BC = XY + YZ | Substitution
BC = XY |Subtraction property of equali.
BC = XY | Definition of congruent seg.